Heavy Rack is called the "selective shelf,pallet shelf ",which is used to store pallet. Usually consist of upright frame, beam, pallet support and other standard components .H-bracing and D-bracing connect with upright by self-lock bolts, can effectively prevent racking from losing balance cause by the release of the bolts. Heavy rack can be designed several rows and lines by width and length of the warehouse, and in the middle has a passage which for the truck to pick the goods. support Guide (Corbel Beam), the storage tray under the direction of depth. Its load capacity can reach 4500kg/level. This kind shelf can work in many kinds trucks. It is a kind of high space using, easy to store and pick, simple components, low cost ,easy to assembled shelf.